Ausführungen:
GT305 / 0,2MM - #50, GT310 / 0,25MM - #40, GT317 / 0,5MM - #30, GT320 / 0,8MM - #5/8, GT323 / 0,8MM - #7/8, GT326 / 1,2MM - #15, GT330 / 1,5MM - #10, GT333 / 2,0MM - #9, GT339 / 2,4MM - #10W, GT341 / 2,8MM - #8 1/2, GT343 / 3,2MM - #7, GT345 / 3,2MM - #7F, GT357 / 6,3MM - #5, GT360 / 6,3MM - #5F, GT364 / 9,5MM - #4F, GT366 / 9,5MM - #4